A researcher reports a 95% CI as 2.30 and 2.50. If the null hypothesis were that the mean in the population equals 2.00, then what would have been the decision for a significance test at a .05 level of significance?
A. Retain the null, because 2.00 is not contained in the confidence interval.
B. Reject the null, because 2.00 is not contained in the confidence interval.
C. Retain the null, because 2.00 is contained in the confidence interval.
D. Reject the null, because 2.00 is contained in the confidence interval.
Answer: B
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